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Inside unit The control transformer blowed up when when water got on it from thawing out the coil after it froze over due to being low on coolant. I call a repair company and they installed the wired transformer backwards Where would i get a wiring diagram for a Intertherm heat pump Model#: E1EH-105HA SERIAL#: E1E9505-06625

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How do you know it was installed backwards?

Posted on Mar 29, 2009


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You can get one from an american supply near you. but you dont need one for a transformer. the istructions will be printed on the transformer. just put th high power where it is labeled and the low power on the other side. that is after you get a new one. also check to see if there is a fuse on the circuit board

Posted on Oct 30, 2008

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1 Answer

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Changed the compacitor unit ran fine for half a day..then would not blow cold air..so i let it thaw overnight turned it back onit was fine..then after 5 hours..back to not blowing cold air..any...


if you let it thaw it sounds like your coil froze up
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1 Answer

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If the transformer is you must have a low voltage short.
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